Apparatus for making prepared shingles



June 27, 1933. D. A. CUMFER APPARATUS FOR MAKING PREPARED SHINGLES Original Filed Oct. 25, 1926 5 Sheets-Sheet 1 June 27, 1933. D. A. CUMFER APPARATUS FOR MAKING PREPARED SHINGLES -5 Sheets-Sheet 2 Original Filed Oct 25. 1926 June 27, 1933'.

YELLOW CYLINDER D. A. CUMFER APPARATUS FOR MAKING PREPARED SHINGLES Original Filed Oct. 25. 1926 3:0 cvuuom 5 Sheets-Sheet A TTORNEYS June 27, 1933. D. A. CUMFER APPARATUS FOR MAKING PREPARED SHiNGLES 5 Sheets-Sheet 5 Original Filed Oct. 25. 1926 QANN ATTORNEYS Patented dune 27, 1933 UNITED' STATES PATENT OFFICE DONALD A. CUMFER, OF RUTHERFORD, NEW JERSEY, 'ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE PATENT AND LICENSING CORPORATION, OF BOSTON, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS APPARATUS FOR MAKING PREPARED SHINGLES I Original application filed October 25, 1926, Serial No. 144,128. Divided and this application filed February 23, 1927. Serial No. 170,409.

The invention relates to an apparatus for manufacturing mineral coated prepared roofing.

Prepared roofing of this general type has been extensively used, but because of its dull or monotonous appearance, its use has been more or less confined to inexpensive structures or buildings. This restricted use, ho-w- "ever, cannot be attributed to the quality of the roofing, but solely to the fiat unvarying and monotonous appearance which has not appealed to the eyes of that portion of the purchasing public who desire roofing structure presenting a most pleasing and ornamental efi'ect so as to be appropriate for use vwith building structures of the more expensive type. i

Many efi'orts have been made to overcome the foregoing objections without complete success. It has been proposed to manufacture what are commonly known as colordrift shingles. Under present conditions, such shingles are manufactured by a machine having a partitioned bin for the mineral matter, the partitions in the bin substantially coinciding with the notches in the shingle. In this practice, on a single width machine, where there are three tabs to the strip, each hopper must be filled with three differently mixed charges of slate. The slate to go into each hopper must, therefore, be mixed by hand, before it is placed in the hopper, this operation naturally being a very laborious one. In running the roofing with these three shades, the result is a sheet in which there are three bands or stripes extending lengthwise of the web. The web is cut at the end of the machine into cross cut strips, producing thereby a strip with three difierently colored tabs. It will be readily appreciated that if these strips with only three colors were put on a roof of any substantial area, the said three colors would repeat in a mathematical sequence, and the result is that the roof gives a checkerboard appearance which is decidedly unsightly. In an effort to overcome this, it has been proposed to run four different or independent stocks in a manner similiar' to the above described, in each stock of which the shingle tabs are given different colors, or have the colors placed in different sequence by the proper pre-mixing of mineral matter applied thereto. It has been necessary to run at least four of such stocks, and to then combine them in a regular order so that a finished package will have an irregular sequence of all four of such stocks. It should be borne in mind that in such a practice these four different stocks, of which there are three tabs to each strip, or twelve shingle tabs to the assembly, will have at least six or more colors. It is not a simple matter to produce a desirable color blend effect with such tabs because of the necessity of selecting proper color blends, and also the necessity of arranging the sequences of colors that is necessary to avoid mathematical repetition in colors on the tabs. Such an assembly operation has been exceedingly expensive, and even when carried out to per fection, it does not give the roof the artistic appearance it should have.

It is an object of this invention to provide an apparatus, overcoming the foregoing ob- ]ections by producing mineral coated shingle strips having predetermined areas or tabs thereof coated with predetermined blended minerals in regulated ratios whereby the roofing at all times presents a highly artistic and ornamental appearance. In this apparatus, the minerals of different colors are withdrawn from suitable supplies and combined in measured predetermined quantities to form charges that are thereafter, when in a thoroughly mixed condition, applied to predetermined areas of the roofing material. combinations vary so that the mineral on one tab or area of the roofing strip is of a shade or appearance properly contrasting with the shade or appearance of the mineral on an adjacent tab.

I have found that the roofing can be given ,a most artistic and pleasing appearance when a uniform quantity of mineral or grit is applied to each predetermined area or tab of the strip. The mineral applied to each tab is preferably composed of a series of differently colored grits, and to obtain the artistic appearance referred to, the ratio of one col- These successive charges or color 10 low, in definite varying proportions, which charges are successively formed and progressively applied to predetermined areas of the roofing material.

It is a further object of the invention to 15 provide an apparatus by means of which a wide range in variations in the color combinations may be obtained with a minimum adjustment of the parts of the apparatus.

That is to say, the apparatus is one in which 29 the shades or blends of the mineral charges may with case be varied by changingthe quantity of one-or more minerals entering said charge to another, which naturally 0 changes the shade of the charge which is to be applied to the tab of a shingle strip.

While the apparatus is particularly useful in the production of a roofing having predetermined areas or tabs covered with suitable blended minerals to give the shades desired, and to distinguish from the dull,

monotonous effect obtained by the use of solid colors, it will, of course, be understood that it is entirely within the province of the operator in 0 rating this apparatus to apply charges 0 blended minerals of predetermlned colors to numerous tabs of the roofing material, and to also cover other tabs with the mineral of a solid color should such a color combination be found desirable.

It is a further object of this invention to provide an improved apparatus for measuring the relative qhantities of differently colored minerals forming each charge and in successivel applying such'charges to predetermine areas of the. roofing material. This is accomplished by utilizing in the ap- Earatus a plurality of mineral feed rollers aving in the periphery thereof pockets of a uniform le h and width but varying in depth as well as blankperipheral surfaces.- These feed rolls are adjustably mounted so that the pockets or blank surfaces of one feed roll may be adjusted relative to the 5 others to cause the application of predetermined quantities of the variously colored grits to a determined zone on a carrier, which charges are successively formed and of a predetermined shade when mixed, and thereafter are deposited on selected zones or areas of the roofing material in the desired order. It will be appreciated that the feed rolls all rotate in unison and that the relative quantity of one grit with respect to another that is to form a given charge, may be the action of the adjusting screws 6.

feed rolls so as to place the desired pockets of such rolls in properly timed relation with one another, whereby the operation of said rolls causes said selected pockets to deposit the predetermined quantities of grit on a determined area of the carrier, forming a charge giving the selected shade.

The apparatus furthermore embodies other improved mechanical devices and combinations which are novel and which will be more fully hereinafter described.

This ap lication is a division of my application berialNo. 144,128, filed October 25, 1926.

In the drawings,

Fig. 1 represents a side elevation of color machine showing its relative location in a roofing machine.

Fig. 2 represents a plan view of same.

3 Fig. 3 represents a front elevation of same.

Fig. 4 represents a detail of one of the slate feeding cylinders.

Figs. 4a, 4b, and 40, represent a diagrammatical development of slate feeding cylinders.

Fig. 5 represents a cross section through a slate feeding cylinder.

Fig. 6 represents a diagrammatical section of roofing showing relative amounts of slate on each area.

Referring nowmore particularly to the drawings, wherein like reference characters indicate corresponding parts, the numeral 1 designates the base of the apparatus having supporting legs of any convenient type. Near its upper end there is provided a pair of separated rolls 2 and 3. The roll 3 is preferably mounted for rotation in the frame of the machine and is not adjustable. The roll 2, however, is adjustably received in slideways 4 in each side of the machine, the bearing shaft of this roll being supported at each end by blocks 5 which are ad usted by Around the rolls 2 and 3 a collector belt 7 passes. Thisbelt is slowly rotated upon a driving operation of the roll 3.- Obviously, the rolls are adjusted so as to maintainthe belt taut.

This collecting belt or carrier will be more definitely referred to hereinafter.

Disposed on the frame of the machine and above the carrier or collecting belt are a series of hoppers 8, 9, and 10 which extend transversely across the machine and are suitably supported by the legs thereof. These elongated hoppers may each have a series of partitions 11 as shown in Figure 3 to, in effect, divide each hopper into a series of sections. The hoppers 8, 9, and 10 receive batch supplies of differently colored mineral. For

instance, the hopper 8 may receive a supply of yellow grit or mineral, the hopper 9 asupply of red, and the hopper 10 a supply of freely varied by a proper adjustment of said green. These are known as solid colors, it

being, of course, apparent that other colored grits can be used, depending upon the character of the roofing strip that is to be produced.

As has been hereinbefore pointed out, it is one of theobjects of this invention to provide an apparatus by which roofing material may be produced which has various areas or tabs thereof covered with suitably blended grit or mineral matter so as to give the roofing strip a pleasing and ornamental appearance to and destroy the dull and monotonous appearance so general in prepared roofing. In order to apply to predetermined areas or tabs of the roofing strip differently colored minerals in regulated or determined relative quantities so as to properly shade the resultant coniposite charge which is to be applied to a given area of the roofing material, feed rolls 12, 13, and 14 are provided, one being disposed at the bottom of each mineral hopper. One of these feed rolls is shown in detail in Fig. 4. Inasmuch as each feed roll is of the same specific construction, a description of one will suffice for all. Each feed roll is adjustably mounted on a driving shaft 15, being retained in its adjusted position by a fastening bolt or screw 15 that passes transversely through a portion of the feed roll and engages the driving shaft. By means of this adjustment any feed roll may be turned to a determined position and retained in such position. Each feed roll tightly fits the bottom of its feed hopper, so that no material can be delivered from a hopper except by its roll. For the purpose of illustrating this invention, each feed roll is provided in its periphery with a series of pockets 16, 17 and 18 respectively, all-0f different depths and therefore of different capacities. The periphery of each roll also has predetermined blank surfaces. In the showing, three series of the pockets referred to are disclosed, but, of course, this number can be amplified. It will be understood that the depth of the various pockets ineach series of the different feed rolls vary, as will more fully be hereinafter pointed out, and it will further be appreciated that the formation of these pockets in a given roller are not uniform across the roll although having substantially the same width and length, but Vary beneath various of the partitions 11 for the purpose of applying to the carrier belt on a dj accnt zones thereof different quantities of grit. Each roll is, of course, removably connected with its supporting shaft and various rolls are available having pockets therein of different and varying depth so that the appropriate roll may be selected, this, of course, depending upon the color combination desired. Each hopper carries a semi-circular guard 20 which extends around the lower portion of the feed roll for the purpose of preventing the discharge of the material contained in any pocket until such pocket passes beyond the end of the guard, at which time the contained material is readily deposited on the advancing carrier belt traveling beneath the pocket.

As before stated, each feed roller is of the same construction with the exception, of

course, that the pockets arranged therein may, and generally are, of different capacities of red grit to the carrier belt to commingle or mix with the proper quantities of yellow or green grit which has previously, or will thereafter be applied to a given zone on the belt. This is all a matter of timing, the operator after having worked out a pattern, then merely selects feed rolls having the For instance, the feed roll proper formed pockets and adjusts these rolls on their supporting shafts 15 by the adjusting and retaining pin 15 so thatone roll is properly coordinated with another roll whereby the one, two or more rolls will deposit given quantities of differently colored grit on a common zone of the carrier.

All of the feed rolls are adjusted to be driven in unison. The carrier belt operating beneath these rolls is also driven in synchronism with the rolls. Various forms of driving mechanism may be employed, but for the purpose of illustrating this invention, I have shown an aligned shaft 21 carrying a gear 22 meshing with a gear 23 on a shaft 24. The shaft 24 has a sprocket wheel 25 thereon around which a chain 28 passes. This chain also engages a sprocket 29 on a transverse shaft carrying a gear 30 meshing with a gear 31 on the carrier feed roll 3. A clutch mecha ilio its

nism 26 also connects the shaft 24 with a gear 27 that in turn engages a gear 27 on the feed roll for the asphalt, coated fabric material to which the mineral matter is to be applied.

To operate thenyetering or mineral feeding rolls 12, 13, and 14, I provide at one end of the roll 3 a sprocket 22, around which a drive chain 23' passes, this drive chain traveling around a sprocket 24 attached to the shaft of the metering roll 12. This metering roll 12, at its opposite end, also carries a gear 30' meshing with an interposed gear 31, which in turn meshes with a gear 32' mounted on the feed roll 13, while a similar gear 33 transmits the power from the feed roll 13 to a gear 35' on the feed roll 14. In this manner, the feed rolls all operate in the same direction, and, of course, in synchronism. The Width and length of the slots in the metering rolls, 12, 13, and 14:, are identical, save one inch wider on the ends of the rolls. The speed at which these rolls is driven relative his to the speed of the carrier belt is such that as the metering roll advances a width of one inch, the carrier 'belt advances nine inches. As the carrier belt advancesnine inches, the roofing sheet or material passln beneath this belt advances nine inches, whic is the determined area to be covered. These relative movements can, of course, all be varied depending upon the type of shingle that is to be manufactured. I v

The carrier belt 7 passes beneath the-feed rolls and the grit or mineral is applied to this belt in predetermined charges covering given areas of the belt. It will be appreciated, of course, thatthe adjacent zones or areas of this belt receive charges of difi'erently blended mineralsl Qne charge may consist of 3%; red mineral with yellow, while an adjacent charge may contain red and green, depending upon the color combinations selected. However, these charges are formed on the collector belt and when the collector belt reaches the pulley 3 the mineral matter cascades over the battles 32 wherein a thorough intermixing of the differently colored minerals forming each charge occurs without causing a substantial intermixing of the mineral constituting adjacent charges.

A strip of fibrous material such as commonly used in the manufacture of prepared roofing runs beneath the bafiies 32. This strip is represented by the reference character 33. It is impregnated and coated with an adhesive-material such as asphalt, bitumen, etc., and onto this adhesive surface the charges of mineral matter are-deposited. If,

for example, the pockets in the roll are say,

. one inch wide, the relative speeds are so controlled that when the peripheral travel of a metering roll is one inch, the carrier belt will have traveled nine inches, and the roofing sheet will have traveled nine inches. In this way, regardlesspf the speed of the sheet, the metering and deposition of slate, in accordance with a predetermined color blend pattern, may be accomplished. The speed of the various parts of the apparatus andthe movement of the roofing strip 31 are so timed that a, charge of a determinedarea on the carrier 'belt' 7 will cover a predetermined zone of the roofing strip, or in common practice will cover a tab which may be -12" x 9" inapparatus where the sheet is cut into strips,

I each strip preferably embodying three tabs.

where such grit is collected and may be again I used in an approved manner.

' As will be clearly appreciated, the process herein involved'is one by which roofing material is produced wherein the various tabs thereof are coated with grit or mineral matter of different colors in redetermined relativequantities. It will furthermore understood that the adjacent tabs, for instance, of a. roofing strip, have difierent shades so as to destroy any dull or monotonous efiect.

In Fig. 6, I have shown diagrammatically the surface of a section of a roofing strip produced by this operation. In this diagram the tabsA, A, A and A of course, all have received grit charges that have been formed and placed on the carrier belt 2-by the action of the feed rolls between a pair of the bafiles 11. Likewise, the tabs B, B, B and B, all

have received mineral charges that were deposited on the carriehbelt by pockets in the feed rolls disposed between an adjacent pair of said baflles 11 and the same applies as to I the tabs C to C D to D, E to E and F to F.

In this embodiment of the invention, the roofing sheet is of sufiicient width to provide six tabs thereon or two strips, as each strip matter, but the proportions of one colored mineral relative to another applied to the adjacent tabs will vary. In the diagrammatic showing,.the tab A has been covered with a charge of grit, of which is green in color and 2/; yellow. Assuming that the total depth of a pocket formed in one of the feed rolls must be .33", to provide the amount of grit necessary to cover an area of say'12" wide x9" long, the rolls will have been so timed and adjusted that the green roll 14 will have-a pocket of .199, depositing this quantity of green slate or mineral on an area or zone ofthe carrier belt that has already received from'a suit-ably sized pocket in the yellow feed rolls 12, .132 of yellow grit or mineral matter. The tab marked A in the dlagrammatic v'ew has received a charge of m neral'matter containing a green colored mineral and A a red colored mineral. This means that the operator has adjusted his rolls so that at the time a given zone or area of the carrier belt is to receive this charge, a pocket in the. red roller 13 of a capacity of .166" deposits its charge on this carrier, while at the time this charge reaches the green roll 14a pocket in this roll of 0.166"

passes from beneath the guard 20 and drops this mineral on the zone that had received the red charge. During the time that this zone of the carrier or belt passed beneath the ellow feed roll 12, one of the blank or unroken spaces 19 of this feed roll is passing around the guard 20, prohibiting the application of any of the yellow grit to the zone or area of the carrier that received the charge subsequently applied to the tab A The same operation occurs in the measuring of the various charges to be a plied to all of the other each roll to produce a roofing sheet wherein the tabs receive charges containing ratios of difi erently colored minerals as shown'in Fig. 6. In this chart, A represents the mineral matter fed by the green and yellow rolls to cover the tab designated by reference character A in Fig. 5. A likewise represents the capacity of the pocket feeding the green and yellow grit or mineral matter to form the charge covering the tab A The tab A, as shown in Fig. 5, has received a mineral charge containing certain quantities of yellow, green, and red grit. By referring to the diagrammatic chart in Fig. 6, it will be seen that the feed rolls 12, 13, and 14 all have pockets of .111" which deposit the desired quantity of grit in super-imposed layers on a given zone of the carrier belt during the advancing of this zone through the machine. As before stated, when a color combination has been designed which has a pleasing appearance, then the feed rolls are selected and adjusted so that the pockets formed therein are of suificient depth to produce the charges desired, and are so timed as to deposit the contents of each pocket on the proper area or zone of the carrier belt as it is advancing through the machine.

Fig. 6 furthermore contains reference characters B to B inclusive to F to F inclusive,

. and such reference characters correspond c charges its contents of red mineral matter on this zone, the carrier belt then advancing around the drive roll 3. but receives no mineral matter from the feed roll 14, inasmuch as an unbroken portion of this feed roll is traveling around the guard when this predetermined area of the carrier belt passes beneath this roll. It will be understood that in the illustration herein given, it has been assumed that a pocket having a total depth of .333 is necessary to apply the proper amount of grit to cover one of the tabs, but, of course, this selection has been made merely for the purpose of illustrating this invention, and can be changed at will.

It will also be appreciated that the color combinations, as herein shown, are subject to change atany time. Regardless of the color combinations used, it will be apparent that charges containing regulated quantities of one colored grit relative to another can be successively formed frombatch supplies of differently colored minerals and thereafter applied when in a thoroughly intermixed condition to determined tabs or zones of a roofing sheet so as to give such tabs a proper and variable shade, destroying the dull and monotonous appearance, incident to the use of solid colors. The relative quantities of the differently colored grits forming each charge are subject to instant change, permitting the apparatus to produce roofing material in which the tabs are covered with grit charges of various patterns and wherein the charges applied to one tab properly contrast with the charges applied to an adjacent tab.

It-will be appreciated that the pockets 16, 17, and 18 formed in the various feeding rollers generally are of the same length and width. However, as is clearly apparent, the pockets in the various rolls Wlll vary in depth. I propose to utilize liners or fillers to be inserted in the various pockets in the feed rolls by means of which the carrylng capacity of each pocket can be varied to produce any desired number of color combinations. These liners will naturally change the depth of a pocket, and by keeping available a substantial number of liners of various depths, a multitude of color combinations can be effected with the use of a mimmum number of rollers.

In this specification, I have disclosed nietering rolls for measuring the quantities of material deposited on the carrier It will be, of course, understood that it is within the scope of this invention to use any suitable measuring devices by means of which definite quantities of minerals could be deposited on the carrier belt within certain limits of accuracy. 4

Having thus described my invention, what ll claim is:

1. In a machine of the character described, the combination with a carrier, 8.

are

, relative quantities of minerals withdrawn from said receivers, means for agitating the mlnerals forming each charge, and means for advancing a strip of roofing matierial, to

receive successive charges of the intermixed grits on predetermined zones thereof wherey adjacent zones are coated with mineral matter of contrasting colors.

2. In a machine of the character described, the combination with a carrier, of means for moving the carrier, mechanism for depositing on predetermined zones of said carrier regulated quantities of mineral matter, means foradvancing a roofing sheet strip, and means for depositing said charges from the carrier on predetermined zones of the roofing sheet.

. 3. In a machine of the character described, the combination with a movable carrier, a plurality of receivers, measuring devices for controlling the discharge of material from each receiver, means for operatingsaid carrier and: said measuring devices to deposit definite quantities of material from said receivers on determined zones 'of said carrier, means for passing a roofing strip adjacent the carrier, and means for directing said charges from the carrier on predetermined zones of said roofing strip.

4. An apparatus for coating roofing comprising, in combination, means for advancing the roofing base, a plurality of receivers each adapted to contain different characters of surfacing materials, metering devices cooperating with the receivers, means for operating the metering devices concurrently with the travel of the base to withdraw the surfacing minerals to form successive charges to be cyclcally applied to the advancing base and means for efiecting a thorough intermixture of the surfacing materials constituting the charges prior to their application to the advancing base.

5. An apparatus for surfacing roofing comprising, in combination, means for continuously advancing'a roofing base, a series of receivers each adapted to receive difierent kinds of surfacing materials, metering devices cooperatively arranged with respect to the receivers, and means .for'actuating said metering devices to separately withdraw the said surfacing materials and means for thoroughly intermixing and combining the same to form charges' to be successively applied to the advancing roofing.

6. An apparatus for surfacing roofing materials, comprising, in combination, means for continuously advancing a roofing base, a series of receivers each adapted to'contain dlfierent characters of surfacing minerals,

metering devices cooperatively associated with said receivers, means for actuating said metering devices in timed relation to the advancement of the roofing base, said metering devices being provided with means for continuously varying the relative quantities of minerals withdrawn, to thereby cyclically change the color of the [succeeding charges deposited on the base.

7. In an apparatus of the class described, in combination, means for continuously advancing a roofing base, a series of receivers each adapted to contain differently colored mineral" grits, metering rollers associated with each of said receivers, said metering rollers being provided with means to continually vary the ratio of the minerals withdrawn from one of the receivers relative to the others to thereby continuously vary the compositionand color of the successive charges of minerals applied to the advancing base.

8. An apparatus for surfacing roofing material comprising means for advancing the.

roofing materials, a plurality of receivers each adapted to contain differently colored minerals, a series of metering rollers operatively associated wlth the rece1vers, sa1d metering rollers having varying withdrawal capacities, means for actuating said metering rollers in timed relation to the advancement of the roofing strip for continuously efiecting the formation of charges of continuously varying composition to be applied strips comprising means for advancing the roofing strip, a plurality of sources of supply for differently colored minerals, means for withdrawing streams of suchminerals and means for thoroughly intermixing in cyclically varying quantities of said minerals to form successive charges of different colors andapplying said charges to the advancing strip.

11. An apparatus for coating. roofing strips in combination, means for advancing the roofing strip, a plurality of sources of supply for different characters of surfacing materials, means operable in timed relation to the advancement of the strip to withdraw measured quantities of said minerals and thereafter effect their mixture, substantially as withdrawn and means for depositing such charges on the advancing strip.

12. 'An apparatus for coating roofing strips comprising, in combination, means for continuously advancing the roofing strip, a plurality of sources of supply for different characters of surfacing materials, metering devices operable in timed relation to the advancement of the strip for withdrawing measured quantities of said surfacing materials to form charges to be applied to succes sive zones of said strip, said metering devices being constructed to continuously vary the relative quantities of the withdrawn surfacing materials to thereby cyclically change the color of the charges applied to the advancing strip.

13. An apparatus for surfacing roofing materials comprising, in combination, means for advancing a sheet of roofing material, a series of hoppers each adapted to contain difierent characters of surfacing materials, a series of cooperating metering rollers for Withdrawing predetermined measured quan tities of the surfacing materials in timed relation to the advancement of the roofing strip, said metering rollers having pockets of varying capacities arranged in predetermined relative positions whereby to continuously vary the relative quantities of the withdrawn surfacing materials to form charges of continuous varying qualities.

14. An apparatus for surfacing roofing materials comprising means for advancing a roofing sheet, a plurality of containers each adapted to contain different characters of ,surfacirig minerals, said hoppers being arranged over the advancing strip, a series of metering devices cooperatively. arranged with respect to the hoppers, said metering devices being constructed to continuously vary the ratio of the withdrawn grits relativeto one another to thereby cyclically change the color of the succeeding charges suceessively deposited on succeeding predetermined areas of the advancing strip,

1 5. An apparatus for surfacing roofing strips comprising, in combination, means for continuously advancing a strip of material to be coated, a plurality of receivers each adapted to contain surfacing grits of different characteristics, a series of metering rollers operatively associated with the receivers, means for driving said metering rollers in unison with the advancement of I the strip, said metering rollers being adapting, comprising means for continuously advancing a roofing sheet, a plurality of sources of supply for difierently. colored minerals,

and means for withdrawing varying quantitles of said minerals and means for effect- .ing a predetermined mixture thereof before application to the advancing sheet, said first named means being adjustable to change the ratio of the succeeding withdrawn charges measured ratiosot' the said minerals to form successive charges adapted to be continuously appliedeto the advancing strip, a carrier belt for receiving the charges and depositing the same on the roofing strip, said carrier belt, sheet advancing means, and metering devices, being operated in timed relation.

18. An apparatus for coating roofing strips comprising means for continuously advancing a strip to be coated, a series of hoppers for receiving different characters of minerals, metering devices associated with said hoppers, said metering devices having pockets of differential capacities, for withdrawing predetermined relative quantities of minerals from the different hoppers to form charges to be successively applied to succeeding zones of the advancing strip, said metering devices constantly changing the withdrawn quantities of the materials from some of the hoppers relative to others to thereby continuously change the color of the successive coated'zones on the strip.

19. In an apparatus for producing mixtone effects on roofing, in combination, meansfor advancing the roofing base, a plurality of sources of supply for different characters of surfacing materials, means for withdraw ing streams of minerals from saidsources of supply and effecting their thorough admixture to form a charge of a given character and means for cyclically changing the composition of the succeeding charges app ied to the roofing whereby to continuously change the appearance of the successive charges.

20. In an apparatus for producing mix- ,tone effects on roofing, in combination, means for advancing the roofing base, a plurality of sources of supplv for different characters of surfacing materials. means for withdrawing streams of minerals from said sources of supply and effecting their thorough admixture to form a charge of a given character and means for cyclically changing the composition of the succeeding charges applied to the roofing whereby to continuously change the appearance of the successive charges, and means for predetermining the composition of the cyclic charges applied to the roofing.

. plying the intermixed charge to the roofing base and means for cyclically changing the composition of the successive charges applied to the roofing base.

22. In an apparatus for surfacing roofing in combination, means for advancing a roofing base, a plurality of sources of supply for containing differently colored mineral grits, means for withdrawing streams of said grits from the sources of supply and for thoroughly intermixing substantially all particles of the grits constituting said streams to form a charge of predetermined composition, and for applying such charge to the advancing roofing base and means for cyclically changing the composition of the successive charges applied to the roofing base. i g

23. In an apparatus for producing mixtone effects in roofing surfaced with contrasting granules, the combination with a series of supply chambers each adapted to receive granules of a given color, means for withdrawing intermittently, in metered quantities, streams of granules from said supply chambers, mechanism for intermixing the differently colored granules after such withdrawal, means for cyclically varyin the proportions of granules withdrawn rom said supplychambcrs, andmeans for applying the withdrawn granules to a sheet of roofing material.

24. In an apparatus 'for manufacturing mineral coated roofing materials, the combination with a plurality of supply chambers each adapted to receive bulk supplies of differently colored granules, means for discharging streams of contrasting granules from said bulk supplies in metered quantities to form charges, means for mixing the granules forming each ch go after withdrawal from said bulk sup 'lies, and means for applying said admixed granules to a sheet of roofing, and means for cyclically varying the proportions of granules drawn from said bulk supplies to form succeeding charges of contrasting color.

25. Apparatps of the character described comprising supply sources for contrasting r roofing surface granules, means for receiving the proportions of the different -and combining the granules from. said trasting granules, com rising means for advancing the roofing ase, a plurality of sources of supply for receiving differently colored granules, means for releasing gran-' ules from said sources'of supply and effecting their intermixture as they are supplied tothe advancing roofing base, said means operable in synchronism with the advancement of the belt to cyclically vary the proportions of the released granules; v

27. An apparatus for surfacing roofing comprising in combination means for continuously advancing a roofing-base, a series 0f receiverseach adapted to receive different kinds of surfacing materials, metering devices cooperativelv arranged with respect to the receivers, and means for actuating the metering devices to separately withdraw the surfacing materials and means for thoroughly inter-mixing and combining the same to form charges of a single unbroken stream composed of a mixture of definite composition, to be successively applied to the advancing sheet.

28. In an apparatus for producing mixtone effects in roofing surfaced with contrasting granules the combination with a series of supply chambers eachadapted to receive granules of a given color, means for withdrawing, intermittentlv. in metered quantities, charges of granules from said supply chambers, mechanism for intermixing the differently colored granules after such with drawal, means for cyclically varying the proportions of the granules withdrawn from said supply chambers. mechanism for moving the run of roofiiig toreceive the charges of varying proportions, said, withdrawing means being driven by and operable in synchronism with the advancing means for the roofing.

29. An apparatus for surfacing roofing comprising, in combination, means for advancing a roofing base, a series of receivers adapted to receive different kinds of surfacmg materials, means for withdrawing surfacing materials from said receivers and means for thoroughly intermixing and combiningthe materials to form a charge composed of a mixture of predetermined composition to be applied to the advancing roofing base.

30. An apparatus for producing mixed tone effects in roofing surfaced with contrasting granules comprising, in combination, a plurality of receptacles adapted to contain differently colored granules, means for dischargingmetered quantities of the granules from said receptacles, means for intermixing said granules after withdrawal from the receptaclesto form a charge of predetermined composition and means for applying the same to a sheet of advancing roofing.

31. 'An apparatus for producing cyclical mixed tone eflects on roofing which comprises means for intermixing contrasting granules as they are supplied to a run of roofing, and

succeeding charges concurrently with the travel of the sheet, and means for depositing such charges onsucceeding predetermined areas of the base.

33. An apparatus of the character described comprising supply sources for contrasting roofing surface granules, means for advancing a roofing web, the supply sources being disposed transversely with respect to the advancing width, means for withdrawing and combining granules from said surfaces and thoroughly intermixing the same to form charges of definite composition, and means for applying said charges in parallel lanes upon the advancing strip.

34. An apparatus of the character described comprising supply sources for contrasting roofing surface granules, means for simultaneously combining granules from said sources and interadmixing the same to form charges of definite, predetermined composition, and means for applying said charges in parallel lanes upon an advancing web of roofing material.

35. An apparatus of the character described comprising supply sources for con trasting roofing surface granules, means for simultaneously combining granules from said sources and interadmixing the same to form charges of definite, predetermined composition, means for applying said charges in parallel lanes upon an advancing Web of roofing material, and means for cyclically changing the composition of the charges as the strip is advancing. Y 1

36. An apparatus of the character de scribed com rising supply sources for contrasting roo ng surface granules, means for advancing a web of roofing of sufficient width to be subdivided longitudinally to provide a plurality of shingle strips,.means for simultaneously Withdrawing granules from the supply sources and thoroughly interadmixing the same to form charges of definite composition and means for applying said charges in parallel-lanes upon the advancing roofing web whereby to form upon said web transverse areas of predetermined apparatus.

37. An apparatus for manufacturing granular surfaced roofing comprising a plurality of series of separate receptacles containing supplies of diiferently colored granules, means for feeding a roofing 'web thereunder, means for simultaneously discharging from several supplies in each series of receptacles predetermined proportions of granules therefrom to form a plurality of streams, each stream being of'determined composition and the composition of one of said streams differing at times from the composition of another of said streams, means for periodically varying the proportion of the granules withdrawing from said separate receptacles, and means for continuously depositing said streams upon said traveling roofing web.

In testimony whereof I afiix my signature. DONALD A. CUMFER. 

